Question: Who is the person that was a student of Ivan Pavlov?
Paraphrase: Who is the individual that was a understudy of Ivan Pavlov?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P1066 wd:Q42985 . ?sbj wdt:P31 wd:Q5 } 
Answer: Konstantin Bykov, Leon Orbeli, Pyotr Anokhin, Boris Babkin, Nikolay Voytsekhovsky, Viktorin S. Derjabin, Nikolay Krasnogorskiy, Takatarō Kigi, Petr Stepanovič Kupalov, Davyd Hlinski